MESON Chess Problem Database

Problem Display
PID: 246451 (8/1B4K1/1pp5/r4N2/1r4b1/3PPkN1/Q1R1p3/4B2R w - - 0 1)

Petite, Efren

Europe Echecs, 1993

8/1B4K1/1pp5/r4N2/1r4b1/3PPkN1/Q1R1p3/4B2R

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg2
      • 2.Sh4#
  • Tries
    • 1.Bxc6+?
      • 1...Re4
        • 2.Bxe4#
      • 1...Rd5!
    • 1.Rc4?
      • threat
        • 2.Qxe2#
      • 1...Kg2
        • 2.Sh4#
      • 1...Rxa2
        • 2.Bxc6#
      • 1...Rb2!
    • 1.Rc5?
      • threat
        • 2.Qxe2#
      • 1...Kg2
        • 2.Sh4#
      • 1...Rb2
        • 2.Bxc6#
      • 1...Rxa2!
  • Keys
    • 1.Rxc6!
      • threat
        • 2.Qxe2#
      • 1...Kg2
        • 2.Sh4#
      • 1...Rxa2
        • 2.Rc4#
      • 1...Rb2
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(g),P_SPINP(a),S_FLIGHT::S(H)
  • Tries
    • Try
      • B(I);CHECK,XP(g)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::B(I),XR(c)
      • Refutation
        • R(e);P_SPINR(e)
    • Try
      • R(D);
      • Threat
        • QAB1(C),XP(a)
      • Vars
        • K(b);N_SPINP(g),P_SPINP(a),S_FLIGHT::S(H)
        • R(e);N_GUARD,XQ(C)::B(I),XP(g)
      • Refutation
        • R(c);
    • Try
      • R(D);
      • Threat
        • QAB1(C),XP(a)
      • Vars
        • K(b);N_SPINP(g),P_SPINP(a),S_FLIGHT::S(H)
        • R(c);N_GUARD::B(I),XP(g)
      • Refutation
        • R(e);XQ(C)
  • Actual
    • R(D);XP(g)
    • Threat
      • QAB1(C),XP(a)
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::S(H)
      • R(e);N_GUARD,XQ(C)::B(I)+R(D)
      • R(c);N_GUARD::B(I)+R(D)
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